Fountain pen



Dec. 16, 1952 A. G. RosA 2,621,528

' FOUNTAIN PEN Filed April 26, 1948 I 2 SHEETS- SHEET 1 INVENTOR ATTORDec. 16, 1952 A. G. ROSA 2,621,628

- FOUNTAIN PEN Filed April 26, 1948 2 SHEETS-SHEET 2 un N N N N N N 20/i s 22 g 22 NK N `V 1 N! l NN N I" `g N l Y N I N *i N 2/ 1' i *l l *l N*i ,N y

24 Il INVENTOR Patented Dec. 16, 1952 n UNITED STATES PATENT opp-ICE"Anthony G. Rosa, Lyndhurst, N. J.

Application April 26, 1948, Serial No. 23,247

This invention relates to fountain pens, and more especially' toimprovements in fountain pens ofthe type in which the writing uid itselfis produced in situ.

An .object of this invention is to provide an improved fountain penwhich will produce writing fluid immediately, not only within thewriting fluid chamber thereof, but also at the pen point so that thefountain pen can be satisfactorily used immediately for its intendedwriting purpose, Withoutthe annoyance of i'lrst having Water or otherunsatisfactory Writing fluid emerge.

Another object of this invention is to provide an improved fountain penof the aforementioned type having a novel arrangement of parts for thequick and efficient formation of writing fluid of the desiredcharacteristics.

A further object of my present invention is to provide an improvedfountain pen which carries suflicient ink-forming material so that ithas to be relled only very infrequently and then by a simple andconvenient method employing a special rell device.

Other objects of this invention will become apparent from the followingdetailed description 6 Claims. (Cl. 120-4215) taken in connection withthe accompanying draw- A ings, which form a part hereof and in whichlike characters designate corresponding parts throughout.

In the drawings:

Fig. 1 is a longitudinal sectional view of a preferred embodiment of myinvention;

Fig. 2 is an elevation of the feed and applicator of Fig. 1;

Fig. 3 is a cross-section taken along the line 3-3 of Fig. 2;

Fig. 4 is a cross-section taken along the line 4-4 of Fig. 2; Y,

Fig. 5 is an enlarged view of the plunger, support bushing and cylindershown in Fig. 1;

Fig. 6 is a part cross-section and part elevation of the cylinder ofFigs. 1 and 5;

Fig. 7 is a broken longitudinal section of the lower portion of thecylinder of Figs. l, 5 and 6, modified; and

Fig. 8 is a view, partly in section and partly in elevation, showing thearrangement of certain parts `during the ink paste filling andre-iilling operations.

Referring to the drawings, I5 isthe barrel of my fountain pen. At itsupper end it is rigidly attached to support bushing I6 and at its lowerend the barrel is attached to pen section I'I.

While other suitable means for attaching the barrel to I6 and I'I may beemployed, I prefer to use the threaded' means shown in Fig. 1.

A removable cap I8 is attached, preferably by the .threaded means shownin Fig. 1, to the upper mariti/nf the bushing I6. Under cap I8 is an ex-'Jternuavlly-threaded plug I9 which engages with the internally-threadedcartridge vplunger 20.

Disposed around the lower portion of plunger 20' is an envelope orcylinder 2| the upper part of which is securely but removably attachedto bushing I6 by means of tie ring 22. The lower part of cylinder 2l hasa piston-like portion 23 provided with annular grooves 24 (see Fig. 6)

and with an opening 25 (see Fig. 5). The chamber 25a serves as the inkpaste container.

Disposed withinvopening 25 is the top part of applicator 26. `'The lowerpart of applicator 26 is rigidly but removably attached to pen feed 21,either by suitable pin means (not shown) or by reason of having thecooperating parts of the proper size.

Applicator 26 has a longitudinal internal channel 28 and annular grooves29 (see Figs. 2 and 3). Operatively linking said channel and grooves aretransverse conduits 3l]y (Fig. 3) terminating in port openings 3|.v l

Channel 28 of the applicator andduct 32 of the feed are disposed so asto form a unitary duct, terminating at its lower end in opening or notch33.r A'feed channel 34 having capillary grooves 35 (Fig. 4) is alsoprovided, in the usual manner, as is also pen point 3B. The writingfluid is formed in chamber 31, which acts'also as the reservoir for thewriting fluid.

The operation of my improved fountain pen will now be described. It isassumed that at the A outset the arrangement of parts is as shown inFig. 1.

Cap I8 is rst unscrewed from bushing I6;Vv Plug I9 will thereby beexposed to view and can be unscrewed. A container 38 (Fig. 8) having anexternally-threaded neck portion and provided also with a screw cap (notshown) and containing ink paste is operatively attached to plunger 20 bythe threaded means shown. The ink paste is squeezed out of the containerand forced into the ink paste chamber 25a, which can conveniently bemade of Va size adequate to hold a supply of ink paste which will lastfor several months, and even for years. After the contents of container38 have been emptied into the chamber 25a, the

container is removed and replaced by plug I9.

The pen point may then be immersed into waterv and downwardr pressure isapplied on the plug I9. This forces plunger 20 downward and the plungercauses cylinder 2|, which is secured near its top by-tie ring 22, andwhich is.

the paste goes through conduits 30 into duct 28.

If desired, instead of immersing the pen point in water at the outset asabove indicated, the pen point may be immersed in water at this point.

When the downward pressure on plug I9 is released the resiliency of therubber or other iiexible material from which cylinder 2l is made causesthe cylinder to be raised rapidly. Chamber 31 is thereby substantiallyevacuated of.

air and consequently water immediately flows through aperture 33, upduct 32 and channel'28, and then via conduits out of water ports"`3|into ink forming chamber 31. The ink paste which was contained ingrooves 29 is immediately diluted and Writing fluid of the correctcharacteristics is formed. Because of the presence in channel 28 of someink paste at the start ofthe upward motion of cylinder 2 l, writingfiuidforms in the channel, and the pen can be used immediately for' writingpurposes. vFeed 'channel' Sliv centration of the ink paste, vand caneasily be 1 determined in any given case.

The use of a flexible cylinder in combination with a rigid, movableplunger and tie ring is not restricted to an ink-forming fountain pen asherein described, but in modified form applies to the regular type ofknown fountain pens. Fig. 7 shows the construction of part of such amodified cylinder which could be so employed. It is noted that there isno opening (as in 25 of Fig. 5) herein.

AsV will be understood by those skilled in the art the purposes of thisinvention can be at tained by the use of various materials. That is tosay, this invention is not to be limited to the use of any particularmaterial or materials of construction, unless otherwise specicallyprovided herein. Merely by way of illustration and not for purposes oflimitation I may mention the following as preferred materials for theparts in* dicated: hard rubber or cellulose acetate for the barrel andcap; gold for the pen point; hard rubber-'for the feedand pen section;polymethacrylate (Lucite) for the applicator; rubber for the cylinder;brass for the cartridge plunger; and brass for the plug.

While this invention has been describedin detail in order to enablethose skilled in the art clearlyA to-understand it, it will beunderstood thatall modifications that do not depart froml the spirit ofthis invention are intendedtobe secured herein if they come withinthescope-of the" appended claims. Thus,while theinvention lhasbeen-described. with specialv relation Ato the common type oi".fountainpens, it isnot t'o'be limited thereto, asit is also applicableto' other fountain pen4 types such as ball point pens', as well asper--4 fume dispensers, e. g., of the' ball point-type.

I claim:

1. A fountain pen suitable for the rapid production of writing iiuid insitu, whichcomprises the combination of a pen barrel, a hollow plungermovable within said barrel, a resilient cylinderlike member having itsrear end fixed to sai barrela-nd having a smallcentral opening at itsantrirend and` being longitudinally stretchable over said plunger, atube-like :applicator closed at one end, which end snugly fits into saidcentral opening, said applicator having at least one annularcircumferential groove forretainfing ink paste, said' barrel having.therein ani ink-forming and retaining reservoir anterior of saidcylinderlike member, and a pen feed engaging the lower part of saidapplicator, said feed and said applicator having a conduit therein.

2; The.. combination of claim 1, wherein one opening of said conduitterminates at said annular grooves.

3. Afountain pen suitable for the rapid production of writing fluid insitu, which comprises the combination of a pen'barrel, a hollow plungermovable with-in said barrel, a iiexiblecylinder operativelyV engagingwith saidplunger'and 1011+ gitudinally stretchable thereover,said.cylin'de1" having its rear end xed to said barrel.` and have ingannular recesses at'its anterior'end. and a small central openingtherein', a tubeL-likea'pplicator closed at one end, which en'd snuglyfits. into said central opening, said applicator having.

and' said `applicator having a conduit extending1V therethrough andhavingan 'opening into. said` reservoir.

4. rThe combination of `cl=aim. 3`, 4wherfeinthe top fof the conduitterminates at sai-d'arinular grooves. y i

5. The combination in av twocliambered`foun tain Apen suitable for the"rapid production or`v writing fluid in situ, whichcomprises a Apiston`septum between the chambers, said septum .having a small central openingtherein, a tubelike applicator closed at one end, which end' snuglyHfits into said central opening, said applicator having at least oneannulargroove therein, and a pen feed having `alongitudinal'circumferential channel and operatively engagingl thel'ower..part of said applicator, said feed and said applicator' havingfaconduit` extend'ingrrintleriorly' through part of said applicator andpart of'said feed, said conduit having one opening insaidchannel of saidfeed and another opening externallyof the applicator.

6. The combination of claim 5, in which" the other opening ofthelconduit is' insaidarnular grooves. y

ANTHONY G. ROSA.

REFERENCES CITED" Y The following. references; arefofil record in tliefile of this patent:

UNITED STATES PATENTS

